/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.dolphinscheduler.plugin.task.sqoop;

import org.apache.dolphinscheduler.common.utils.JSONUtils;
import org.apache.dolphinscheduler.plugin.task.api.AbstractYarnTask;
import org.apache.dolphinscheduler.plugin.task.api.TaskExecutionContext;
import org.apache.dolphinscheduler.plugin.task.api.model.Property;
import org.apache.dolphinscheduler.plugin.task.api.parameters.AbstractParameters;
import org.apache.dolphinscheduler.plugin.task.api.parser.ParamUtils;
import org.apache.dolphinscheduler.plugin.task.api.parser.ParameterUtils;
import org.apache.dolphinscheduler.plugin.task.api.utils.MapUtils;
import org.apache.dolphinscheduler.plugin.task.sqoop.generator.SqoopJobGenerator;
import org.apache.dolphinscheduler.plugin.task.sqoop.parameter.SqoopParameters;

import java.util.HashMap;
import java.util.Map;

/**
 * sqoop task extends the shell task
 */
public class SqoopTask extends AbstractYarnTask {

  /**
   * sqoop task params
   */
  private SqoopParameters sqoopParameters;

  /**
   * taskExecutionContext
   */
  private final TaskExecutionContext taskExecutionContext;

  private SqoopTaskExecutionContext sqoopTaskExecutionContext;

  public SqoopTask(TaskExecutionContext taskExecutionContext) {
    super(taskExecutionContext);
    this.taskExecutionContext = taskExecutionContext;
  }

  @Override
  public void init() {
    logger.info("sqoop task params {}", taskExecutionContext.getTaskParams());
    sqoopParameters =
        JSONUtils.parseObject(taskExecutionContext.getTaskParams(), SqoopParameters.class);
    //check sqoop task params
    if (null == sqoopParameters) {
      throw new IllegalArgumentException("Sqoop Task params is null");
    }

    if (!sqoopParameters.checkParameters()) {
      throw new IllegalArgumentException("Sqoop Task params check fail");
    }

    sqoopTaskExecutionContext = sqoopParameters.generateExtendedContext(taskExecutionContext.getResourceParametersHelper());
  }

  @Override
  protected String buildCommand() {
    //get sqoop scripts
    SqoopJobGenerator generator = new SqoopJobGenerator();
    String script = generator.generateSqoopJob(sqoopParameters, sqoopTaskExecutionContext);

    // combining local and global parameters
    Map<String, Property> paramsMap = taskExecutionContext.getPrepareParamsMap();

    String resultScripts = ParameterUtils.convertParameterPlaceholders(script, ParamUtils.convert(paramsMap));
    logger.info("sqoop script: {}", resultScripts);
    return resultScripts;

  }

  @Override
  protected void setMainJarName() {
  }

  @Override
  public AbstractParameters getParameters() {
    return sqoopParameters;
  }
}
